| 摘要 |
An oscillatory actuator has a movable portion (27), and electromagnetic driver (28) for reciprocating the movable portion (27) in a certain direction by an electromagnetic force. The movable portion (27) and the electromagnetic driver (28) are housed in a body casing (30) so as to be integrally reciprocatable in a direction identical to the certain direction. The movable portion (27) and the electromagnetic driver (28) are reciprocated with phases opposite to each other in the body casing (30). The electromagnetic driver (28) therefore functions as an amplitude control weight, which can eliminate or simplify another amplitude control weight to reduce the size, the weight, and the cost of the actuator as a whole. |
